Being ‘hardwired’ it should always have power and the health status in the app said the battery was at 100%.  I troubleshot the connection with no luck.  My WIFI network had not changed and my other three Ring cameras were working fine.  I plugged the doorbell in but got no light indicating it was charging or alive or anything.  I consulted Ring troubleshooting and even talked to AI and tried everything that was suggested including a hard reset to no avail.  No lights or anything to indicate it was doing anything, it was totally dead.  The doorbell sat for about two weeks unpowered while I ordered a new one.  I wanted to check everything again to be sure I wasn’t throwing away a good doorbell so I tried a hard reset again.  This time I actually got some lights.  It made a sound and I got the blue ring flashing.  Soon after just the top section of the blue ring was flashing.  It was actually online for a while (so said the app) but when I tried to bring up the live feed it said it was offline.  Then the ring turned white and is spinning around.  In health status it now said that the battery was at just 2%.  I tried disconnecting the power cord and plugging the usb power cable in.  The white lights continue to chase around the circle and after about 30 minutes it’s still at 2%.  Did the built in battery die?  If so, can the battery be replaced?